Fastening device



FIG. 1 is a left side elevational view of a fastening device according to the invention, the right side elevational view being identical thereto.

FIG. 2 is front elevational view of the fastening device of FIG. 1, the rear elevational view being identical thereto.

FIG. 3 is a top plan view of the fastening device of FIG. 1.

FIG. 4 is a bottom plan view of the fastening device of FIG. 1; and,

FIG. 5 is a perspective view of the fastening device of FIG. 1. 

CLAIM The ornamental design for a fastening device, as shown and described. 